build(deps): update xlsx requirement from 0.14.1 to 0.14.3

Updates the requirements on [xlsx](https://github.com/SheetJS/js-xlsx) to permit the latest version.
- [Release notes](https://github.com/SheetJS/js-xlsx/releases)
- [Changelog](https://github.com/SheetJS/js-xlsx/blob/master/CHANGELOG.md)
- [Commits](https://github.com/SheetJS/js-xlsx/commits)

package.json

@@ -68,7 +68,7 @@
     "vue-splitpane": "1.0.4",
     "vuedraggable": "2.20.0",
     "vuex": "3.1.0",
-    "xlsx": "0.14.1"
+    "xlsx": "0.14.3"
   },
   "devDependencies": {
     "@babel/core": "7.0.0",